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<div class="header">
  <div class="summary">
<a href="#func-members">函数</a>  </div>
  <div class="headertitle">
<div class="title">scrollw.c 文件参考</div>  </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><code>#include &quot;<a class="el" href="a03629_source.html">precomp.h</a>&quot;</code><br />
</div>
<p><a href="a00836_source.html">浏览源代码.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
函数</h2></td></tr>
<tr class="memitem:a7ecb77bf56d80ccba86e9cba46924271"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a> (HDC hdc, HRGN hrgnClip)</td></tr>
<tr class="separator:a7ecb77bf56d80ccba86e9cba46924271"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9c15f7cde7f639a841e61fa332a07992"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00836.html#a9c15f7cde7f639a841e61fa332a07992">InternalScrollDC</a> (HDC hdc, int dx, int dy, RECT *prcSrc, RECT *prcClip, HRGN <a class="el" href="a03266.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>, HRGN hrgnUpdate, LPRECT prcUpdate, BOOL fLogUnits)</td></tr>
<tr class="separator:a9c15f7cde7f639a841e61fa332a07992"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9e4e39922fbfbba0375010e4863cd749"><td class="memItemLeft" align="right" valign="top">BOOL&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00836.html#a9e4e39922fbfbba0375010e4863cd749">_ScrollDC</a> (HDC hdc, int dx, int dy, LPRECT prcSrc, LPRECT prcClip, HRGN hrgnUpdate, LPRECT prcUpdate)</td></tr>
<tr class="separator:a9e4e39922fbfbba0375010e4863cd749"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1cef636c724052493ab55c00c4ca21f3"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00836.html#a1cef636c724052493ab55c00c4ca21f3">xxxScrollWindowEx</a> (<a class="el" href="a00365.html#a1a2ef1c363aa0787a8f8a7dde2a34aaf">PWND</a> pwnd, int dx, int dy, RECT *prcScroll, RECT *prcClip, HRGN hrgnUpdate, LPRECT prcUpdate, <a class="el" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a> flags)</td></tr>
<tr class="separator:a1cef636c724052493ab55c00c4ca21f3"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<h2 class="groupheader">函数说明</h2>
<a id="a9e4e39922fbfbba0375010e4863cd749"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9e4e39922fbfbba0375010e4863cd749">&#9670;&nbsp;</a></span>_ScrollDC()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">BOOL _ScrollDC </td>
          <td>(</td>
          <td class="paramtype">HDC&#160;</td>
          <td class="paramname"><em>hdc</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>dx</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>dy</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPRECT&#160;</td>
          <td class="paramname"><em>prcSrc</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPRECT&#160;</td>
          <td class="paramname"><em>prcClip</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">HRGN&#160;</td>
          <td class="paramname"><em>hrgnUpdate</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPRECT&#160;</td>
          <td class="paramname"><em>prcUpdate</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00836_source.html">scrollw.c</a> 第 <a class="el" href="a00836_source.html#l00642">642</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;{</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;    RECT rcSrc;</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;    RECT rcSpb;</div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;    <a class="code" href="a02581.html">PWND</a> pwnd;</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;    HRGN <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>;</div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;    BOOL fRet;</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160; </div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;<span class="comment">     * ScrollDC does not scroll update region. Under WinNT, an app calling</span></div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;<span class="comment">     * GetUpdateRgn() then ScrollDC() then InvalidateRgn() will not get</span></div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;<span class="comment">     * any new update region that happened between the Get and Scroll. Under</span></div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;<span class="comment">     * Win3.1, that was not a problem because no other app ran during this</span></div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;<span class="comment">     * time. So pass hrgnInvalid - this will affect the hrgnUpdate and</span></div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;<span class="comment">     * prcUpdate values being returned from ScrollDC with the update region.</span></div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;    <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = NULL;</div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;    <span class="keywordflow">if</span> ((pwnd = <a class="code" href="a00644.html#a6abd9613dcf1227e044eb29b61b1b4ae">FastWindowFromDC</a>(hdc)) != NULL) {</div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160; </div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;        <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = pwnd-&gt;<a class="code" href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">hrgnUpdate</a>;</div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160; </div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == MAXREGION) {</div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160; </div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;<span class="comment">             * This is a fix for winhell, a performance testing app</span></div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;<span class="comment">             * written by some guy working for a windows magazine.</span></div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;<span class="comment">             * this app scrolls it&#39;s window while it is completely</span></div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;<span class="comment">             * invalid.  We normaly won&#39;t scroll invalid bits but</span></div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;<span class="comment">             * but we make the exception here</span></div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;            <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = NULL;</div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;        }</div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;    }</div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160; </div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;    fRet = <a class="code" href="a00836.html#a9c15f7cde7f639a841e61fa332a07992">InternalScrollDC</a>(hdc,</div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;                            dx,</div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;                            dy,</div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;                            prcSrc,</div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;                            prcClip,</div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;                            <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>,</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;                            hrgnUpdate,</div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;                            prcUpdate,</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;                            TRUE) != ERROR;</div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160; </div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;<span class="comment">     * InternalScrollDC() only scrolls those areas inside the visible region.</span></div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;<span class="comment">     * This means it does no operations on parts of the window if the window</span></div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;<span class="comment">     * isn&#39;t visible. This means SPBs don&#39;t get properly invalidated. This</span></div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;<span class="comment">     * could be seen by starting a dir, then moving another window with the</span></div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;<span class="comment">     * mouse (and keeping the mouse down until the dir finished). The</span></div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;<span class="comment">     * screen is remembered with an SPB, and the dir window doesn&#39;t get</span></div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;<span class="comment">     * properly invalidated because of this.</span></div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;    <span class="keywordflow">if</span> (pwnd != NULL &amp;&amp; AnySpbs()) {</div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160; </div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;        <span class="keywordflow">if</span> (HIWORD(prcSrc) != 0) {</div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160; </div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;            rcSrc = *prcSrc;</div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;            <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&amp;rcSrc, pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left, pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160; </div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;            rcSpb = rcSrc;</div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;            <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&amp;rcSpb, dx, dy);</div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;            <a class="code" href="a00935.html#ae447c29296398f6e6ae0f28d192e606d">UnionRect</a>(&amp;rcSpb, &amp;rcSpb, &amp;rcSrc);</div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160; </div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;            rcSpb = pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>;</div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;        }</div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160; </div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;        <a class="code" href="a00860.html#a682e7a615d4877278df80629d78c3081">SpbCheckRect</a>(pwnd, &amp;rcSpb, 0);</div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;    }</div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160; </div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;    <span class="keywordflow">return</span> fRet;</div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00644_source.html#l01832">FastWindowFromDC()</a>, <a class="el" href="a03257_source.html#l00439">hrgnInvalid</a>, <a class="el" href="a00365_source.html#l01406">tagWND::hrgnUpdate</a>, <a class="el" href="a00836_source.html#l00067">InternalScrollDC()</a>, <a class="el" href="a00935_source.html#l00132">OffsetRect()</a>, <a class="el" href="a00365_source.html#l01399">tagWND::rcClient</a>, <a class="el" href="a00860_source.html#l01031">SpbCheckRect()</a> , 以及 <a class="el" href="a00935_source.html#l00233">UnionRect()</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a03614_source.html#l05408">NtUserScrollDC()</a> , 以及 <a class="el" href="a00890_source.html#l00780">xxxPaintIconsInSwitchWindow()</a>.</p>

</div>
</div>
<a id="a7ecb77bf56d80ccba86e9cba46924271"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a7ecb77bf56d80ccba86e9cba46924271">&#9670;&nbsp;</a></span>GetTrueClipRgn()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">int GetTrueClipRgn </td>
          <td>(</td>
          <td class="paramtype">HDC&#160;</td>
          <td class="paramname"><em>hdc</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">HRGN&#160;</td>
          <td class="paramname"><em>hrgnClip</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00836_source.html">scrollw.c</a> 第 <a class="el" href="a00836_source.html#l00030">30</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;{</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    POINT pt;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    <span class="keywordtype">int</span>   code;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160; </div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    code = GreCopyVisRgn(hdc, hrgnClip);</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160; </div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment">     * NOTE!!! The global hrgnScrl2 is used in this routine!</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    GreGetDCOrg(hdc, &amp;pt);</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keywordflow">if</span> (GreGetRandomRgn(hdc, <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, 1)) {</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        GreOffsetRgn(<a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, pt.x, pt.y);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;        code = IntersectRgn(hrgnClip, hrgnClip, <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    }</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160; </div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">     * Finally convert the result to DC coordinates</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    GreOffsetRgn(hrgnClip, -pt.x, -pt.y);</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    <span class="keywordflow">return</span> code;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a03257_source.html#l00462">hrgnScrl2</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a00836_source.html#l00067">InternalScrollDC()</a>.</p>

</div>
</div>
<a id="a9c15f7cde7f639a841e61fa332a07992"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9c15f7cde7f639a841e61fa332a07992">&#9670;&nbsp;</a></span>InternalScrollDC()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">int InternalScrollDC </td>
          <td>(</td>
          <td class="paramtype">HDC&#160;</td>
          <td class="paramname"><em>hdc</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>dx</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>dy</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">RECT *&#160;</td>
          <td class="paramname"><em>prcSrc</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">RECT *&#160;</td>
          <td class="paramname"><em>prcClip</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">HRGN&#160;</td>
          <td class="paramname"><em>hrgnInvalid</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">HRGN&#160;</td>
          <td class="paramname"><em>hrgnUpdate</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPRECT&#160;</td>
          <td class="paramname"><em>prcUpdate</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">BOOL&#160;</td>
          <td class="paramname"><em>fLogUnits</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00836_source.html">scrollw.c</a> 第 <a class="el" href="a00836_source.html#l00067">67</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;{</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    RECT  rcVis;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    RECT  rcSrc;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    RECT  rcClip;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    RECT  rcUnclippedSrc;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    RECT  rcDst;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    RECT  rcUpdate;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    RECT  rcValid;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    BOOL  fSrcNotEmpty;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    BOOL  fHaveVisRgn;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    POINT rgpt[2];</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    POINT pt;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    <span class="keywordtype">int</span>   dxLog;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <span class="keywordtype">int</span>   dyLog;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    <span class="keywordtype">int</span>   wClip;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <span class="keywordtype">int</span>   wClipValid;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    fHaveVisRgn = FALSE;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">     * Enter a critical region to ensure that no one changes visrgns</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment">     * or update regions while we scroll bits around.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    GreLockDisplay(<a class="code" href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a>-&gt;<a class="code" href="a02605.html#a5e0929a8ef013061be966961b2eddbff">pDevLock</a>);</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160; </div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="keywordflow">if</span> ((wClip = GreGetClipBox(hdc, &amp;rcVis, TRUE)) == ERROR) {</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160; </div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;ErrorExit:</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        GreUnlockDisplay(<a class="code" href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a>-&gt;<a class="code" href="a02605.html#a5e0929a8ef013061be966961b2eddbff">pDevLock</a>);</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        <span class="keywordflow">return</span> ERROR;</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    }</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160; </div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&amp;rcSrc, (HIWORD(prcSrc) ? prcSrc : &amp;rcVis));</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160; </div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    <span class="keywordflow">if</span> (HIWORD(prcClip))</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&amp;rcClip, prcClip);</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160; </div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    dxLog = dx;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    dyLog = dy;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160; </div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <span class="keywordflow">if</span> (fLogUnits) {</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment">         * Convert input parameters to device coordinates</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        GreLPtoDP(hdc, (LPPOINT)&amp;rcVis, 2);</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        GreLPtoDP(hdc, (LPPOINT)&amp;rcSrc, 2);</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160; </div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;        <span class="keywordflow">if</span> (HIWORD(prcClip))</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;            GreLPtoDP(hdc, (LPPOINT)&amp;rcClip, 2);</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160; </div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment">         * The delta values must be treated as a vector from</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">         * the point (0, 0) to (dx, dy).  Scale it as such, then</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="comment">         * compute the difference.  This handles flipped coordinate systems.</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        rgpt[0].x = rgpt[0].y = 0;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        rgpt[1].x = dx;</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        rgpt[1].y = dy;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160; </div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        GreLPtoDP(hdc, rgpt, 2);</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160; </div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        dx = rgpt[1].x - rgpt[0].x;</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        dy = rgpt[1].y - rgpt[0].y;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    }</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    <span class="keywordflow">switch</span> (wClip) {</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    <span class="keywordflow">case</span> NULLREGION:</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160; </div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;NullExit:</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160; </div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        <span class="keywordflow">if</span> (hrgnUpdate &amp;&amp; !GreSetRectRgn(hrgnUpdate, 0, 0, 0, 0))</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;            <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160; </div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        <span class="keywordflow">if</span> (HIWORD(prcUpdate))</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;            <a class="code" href="a00935.html#a6f9d1e9b327899127c080496900d48d9">SetRectEmpty</a>(prcUpdate);</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160; </div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        GreUnlockDisplay(<a class="code" href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a>-&gt;<a class="code" href="a02605.html#a5e0929a8ef013061be966961b2eddbff">pDevLock</a>);</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        <span class="keywordflow">return</span> NULLREGION;</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160; </div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    <span class="keywordflow">case</span> COMPLEXREGION:</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        <a class="code" href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a>(hdc, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>);</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;        fHaveVisRgn = TRUE;</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    }</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160; </div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="comment">     * First compute the source and destination rectangles.</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="comment">     *</span></div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="comment">     * rcDst = Offset(rcSrc, dx, dy)</span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    rcDst.left   = rcSrc.left   + dx;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    rcDst.right  = rcSrc.right  + dx;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    rcDst.top    = rcSrc.top    + dy;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    rcDst.bottom = rcSrc.bottom + dy;</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160; </div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;<span class="comment">     * If necessary, intersect with caller-supplied clip rect.</span></div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="keywordflow">if</span> (HIWORD(prcClip)) {</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160; </div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        <span class="keywordflow">if</span> ((wClip == SIMPLEREGION) &amp;&amp;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;            ((<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == NULL) || (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == MAXREGION))) {</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160; </div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="comment">             * Simple clip region: just a rect intersection</span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;            <span class="keywordflow">if</span> (!<a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&amp;rcVis, &amp;rcVis, &amp;rcClip))</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;                <span class="keywordflow">goto</span> NullExit;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160; </div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;            <span class="keywordflow">if</span> (!fHaveVisRgn) {</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160; </div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;                <span class="keywordflow">if</span> (<a class="code" href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a>(hdc, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>) == ERROR)</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;                    <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160; </div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;                fHaveVisRgn = TRUE;</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;            }</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160; </div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;            GreSetRectRgn(<a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>,</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                          rcClip.left,</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;                          rcClip.top,</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;                          rcClip.right,</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;                          rcClip.bottom);</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160; </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            wClip = IntersectRgn(<a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>, <a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>);</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;            <span class="keywordflow">switch</span> (wClip) {</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            <span class="keywordflow">case</span> ERROR:</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160; </div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;            <span class="keywordflow">case</span> NULLREGION:</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;                <span class="keywordflow">goto</span> NullExit;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160; </div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;            <span class="keywordflow">case</span> SIMPLEREGION:</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160; </div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;                <span class="comment">/*</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="comment">                 * If the clipped region is simple, we&#39;re back in fat</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment">                 * rect city.</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment">                 */</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;                GreGetRgnBox(<a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>, &amp;rcVis);</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160; </div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;            <span class="keywordflow">case</span> COMPLEXREGION:</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;            }</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        }</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    }</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160; </div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="comment">     * Time for basic scrolling area calculations:</span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="comment">     *</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="comment">     * Dst    = Offset(Src, dx, dy) &amp; Vis</span></div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="comment">     * Src    = Src &amp; Vis</span></div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="comment">     * Valid  = Offset(Src, dx, dy) &amp; Dst</span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="comment">     * Valid  = Valid &amp; Invalid &amp; Offset(Invalid, dx, dy)</span></div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="comment">     * Update = (Src | Dst) - Valid</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="comment">     *</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="comment">     * If the vis region is simple, then we know that the valid region</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;<span class="comment">     * will be rectangular.</span></div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="comment">     *</span></div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="comment">     * The rectangular calculation case can only deal with</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="comment">     * hrgnInvalid == NULL or (HRGN)1: the region case is handled the hard way.</span></div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    <span class="keywordflow">if</span> ((wClip == SIMPLEREGION) &amp;&amp;</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;            ((<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == NULL) || (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == MAXREGION))) {</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160; </div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">         * Save a copy of this for update rect calc optimization.</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;        <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&amp;rcUnclippedSrc, &amp;rcSrc);</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160; </div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="comment">         * Dst = Offset(Src, dx, dy) &amp; Vis.</span></div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&amp;rcDst, &amp;rcDst, &amp;rcVis);</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160; </div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment">         * Src = Src &amp; Vis.</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;        fSrcNotEmpty = <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&amp;rcSrc, &amp;rcSrc, &amp;rcVis);</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160; </div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="comment">         * Valid = Offset(Src, dx, dy) &amp; Dst.</span></div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> == MAXREGION) {</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;            <a class="code" href="a00935.html#a6f9d1e9b327899127c080496900d48d9">SetRectEmpty</a>(&amp;rcValid);</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160; </div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;            rcValid.left   = rcSrc.left   + dx;</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;            rcValid.right  = rcSrc.right  + dx;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;            rcValid.top    = rcSrc.top    + dy;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;            rcValid.bottom = rcSrc.bottom + dy;</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160; </div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;            <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&amp;rcValid, &amp;rcValid, &amp;rcDst);</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;        }</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160; </div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;<span class="comment">         * Now calculate the update area.</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;<span class="comment">         *</span></div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="comment">         * There are two cases where the result will be a rectangle:</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;<span class="comment">         *</span></div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;<span class="comment">         * 1) The source rectangle lies completely within the visrgn,</span></div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="comment">         *    and the source and destination don&#39;t overlap.  In this</span></div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;<span class="comment">         *    case the update region is equal to the source rect.</span></div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;<span class="comment">         *</span></div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="comment">         * 2) The clipped source rectangle is empty, in which case</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;<span class="comment">         *    the update region is equal to the clipped dest rect.</span></div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="comment">         *</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;<span class="comment">         * 3) We&#39;re scrolling in one dimension only, and the source</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;<span class="comment">         *    and destination DO overlap.  In this case we can use</span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="comment">         *    UnionRect() and SubtractRect() to do the area arithmetic.</span></div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        <span class="keywordflow">if</span> (!fSrcNotEmpty) {</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160; </div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;<span class="comment">             * Clipped source is empty.  Update area is the clipped dest.</span></div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;            <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&amp;rcUpdate, &amp;rcDst);</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;            <span class="keywordflow">goto</span> RectUpdate;</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160; </div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&amp;rcUpdate, &amp;rcSrc, &amp;rcDst)) {</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160; </div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;<span class="comment">             * They overlap.  If we&#39;re scrolling in one dimension only</span></div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;<span class="comment">             * then we can use rect arithmetic...</span></div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;            <span class="keywordflow">if</span> (dx == 0 || dy == 0) {</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160; </div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;                <a class="code" href="a00935.html#ae447c29296398f6e6ae0f28d192e606d">UnionRect</a>(&amp;rcUpdate, &amp;rcSrc, &amp;rcDst);</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;                <a class="code" href="a00935.html#afa9133f9221aadfcbf10c70a168f3a5f">SubtractRect</a>(&amp;rcUpdate, &amp;rcUpdate, &amp;rcValid);</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;                <span class="keywordflow">goto</span> RectUpdate;</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;            }</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160; </div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a00935.html#a0cbc8750cb300c339ef3d2c0ca689f1a">EqualRect</a>(&amp;rcSrc, &amp;rcUnclippedSrc)) {</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160; </div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;<span class="comment">             * They don&#39;t overlap, and the source lies completely</span></div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;<span class="comment">             * within the visible region.  Update region is the source.</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;            <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(&amp;rcUpdate, &amp;rcSrc);</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;RectUpdate:</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;            <span class="keywordflow">if</span> (HIWORD(prcUpdate))</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;                <a class="code" href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a>(prcUpdate, &amp;rcUpdate);</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160; </div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;            <span class="keywordflow">if</span> (hrgnUpdate &amp;&amp;</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;                !GreSetRectRgn(hrgnUpdate,</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;                               rcUpdate.left,</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;                               rcUpdate.top,</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;                               rcUpdate.right,</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;                               rcUpdate.bottom)) {</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160; </div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;                <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;            }</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160; </div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;            wClip = SIMPLEREGION;</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;            <span class="keywordflow">if</span> (rcUpdate.left &gt;= rcUpdate.right ||</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;                rcUpdate.top &gt;= rcUpdate.bottom)</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160; </div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;                wClip = NULLREGION;</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160; </div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;            <span class="keywordflow">goto</span> DoRectBlt;</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        }</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160; </div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;<span class="comment">         * The update region isn&#39;t rectangular.  Need to do our</span></div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;<span class="comment">         * area calculations with region calls.  Skip all this</span></div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;<span class="comment">         * if the caller doesn&#39;t care about the update region.</span></div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;<span class="comment">         *</span></div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;<span class="comment">         * If he wants a rectangle but no region, use hrgnScrl2 as a temp.</span></div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;        <span class="keywordflow">if</span> (hrgnUpdate == NULL &amp;&amp; HIWORD(prcUpdate))</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;            hrgnUpdate = <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>;</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160; </div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;        <span class="keywordflow">if</span> (hrgnUpdate != NULL) {</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160; </div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;<span class="comment">             * hrgnUpdateCalc = (rcSrc | rcDst) - rcBltDst</span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;            GreSetRectRgn(<a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>,</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;                          rcSrc.left,</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;                          rcSrc.top,</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;                          rcSrc.right,</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;                          rcSrc.bottom);</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160; </div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;            GreSetRectRgn(hrgnUpdate,</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;                          rcDst.left,</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;                          rcDst.top,</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;                          rcDst.right,</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;                          rcDst.bottom);</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160; </div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;            <span class="keywordflow">if</span> (UnionRgn(hrgnUpdate, hrgnUpdate, <a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>) == ERROR)</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;                <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160; </div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;            GreSetRectRgn(<a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>,</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;                          rcValid.left,</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;                          rcValid.top,</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;                          rcValid.right,</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;                          rcValid.bottom);</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160; </div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;            wClip = SubtractRgn(hrgnUpdate, hrgnUpdate, <a class="code" href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a>);</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160; </div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;            <span class="keywordflow">if</span> (wClip == ERROR)</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;                <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160; </div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;            <span class="keywordflow">if</span> (HIWORD(prcUpdate))</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;                GreGetRgnBox(hrgnUpdate, prcUpdate);</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;        }</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160; </div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;DoRectBlt:</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160; </div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;<span class="comment">         * If the valid rectangle&#39;s not empty, then copy those bits...</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;        <span class="keywordflow">if</span> (rcValid.left &lt; rcValid.right &amp;&amp; rcValid.top &lt; rcValid.bottom) {</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160; </div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;<span class="comment">             * If the DC is in a funny map mode, then be sure to map from</span></div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;<span class="comment">             * device to logical coordinates for BLT call...</span></div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;            <span class="keywordflow">if</span> (fLogUnits)</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;                GreDPtoLP(hdc, (LPPOINT)&amp;rcValid, 2);</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160; </div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;            GreBitBlt(hdc,</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;                      rcValid.left,</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;                      rcValid.top,</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;                      rcValid.right - rcValid.left,</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;                      rcValid.bottom - rcValid.top,</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;                      hdc,</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;                      rcValid.left - dxLog,</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;                      rcValid.top - dyLog,</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;                      SRCCOPY,</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;                      0);</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;        }</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160; </div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160; </div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        GreGetDCOrg(hdc, &amp;pt);</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160; </div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;<span class="comment">         * Get the true visrgn if we haven&#39;t already.</span></div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;        <span class="keywordflow">if</span> (!fHaveVisRgn) {</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160; </div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;            <span class="keywordflow">if</span> (<a class="code" href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a>(hdc, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>) == ERROR)</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;                <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160; </div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;            fHaveVisRgn = TRUE;</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;        }</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160; </div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;<span class="comment">         * The visrgn is not empty.  Need to do all our calculations</span></div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;<span class="comment">         * with regions.</span></div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;<span class="comment">         *</span></div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;<span class="comment">         * hrgnSrc = hrgnSrc &amp; hrgnScrlVis</span></div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;        GreSetRectRgn(<a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>,</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;                      rcSrc.left,</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;                      rcSrc.top,</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;                      rcSrc.right,</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;                      rcSrc.bottom);</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160; </div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;        <span class="keywordflow">if</span> (IntersectRgn(<a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>, <a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>) == ERROR)</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;            <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160; </div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;<span class="comment">         * hrgnDst = hrgnDst &amp; hrgnScrlVis</span></div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;        GreSetRectRgn(<a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>,</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;                      rcDst.left,</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;                      rcDst.top,</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;                      rcDst.right,</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;                      rcDst.bottom);</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160; </div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;        <span class="keywordflow">if</span> (IntersectRgn(<a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>, <a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>, <a class="code" href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a>) == ERROR)</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;            <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160; </div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;<span class="comment">         * Now compute the valid region:</span></div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;<span class="comment">         *</span></div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;<span class="comment">         * Valid = Offset(Src, dx, dy) &amp; Dst.</span></div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;<span class="comment">         * Valid = Valid &amp; Invalid &amp; Offset(Invalid, dx, dy)</span></div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;<span class="comment">         *</span></div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;<span class="comment">         * If hrgnInvalid is (HRGN)1, then the valid area is empty.</span></div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;        wClipValid = NULLREGION;</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> != MAXREGION) {</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160; </div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;<span class="comment">             * Valid = Offset(Src, dx, dy) &amp; Dst</span></div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;            <span class="keywordflow">if</span> (CopyRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, <a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>) == ERROR)</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;                <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160; </div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;            GreOffsetRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, dx, dy);</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;            wClipValid = IntersectRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;                                      <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;                                      <a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>);</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160; </div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;<span class="comment">             * Valid = Valid - Invalid - Offset(Invalid, dx, dy)</span></div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;<span class="comment">             * We need bother only if hrgnInvalid is a real region.</span></div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;            <span class="keywordflow">if</span> (<a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> &gt; MAXREGION) {</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160; </div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;                <span class="keywordflow">if</span> (wClipValid != ERROR &amp;&amp; wClipValid != NULLREGION) {</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160; </div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;                    <span class="comment">/*</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;<span class="comment">                     * hrgnInvalid is in screen coordinates: map to dc coords</span></div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;<span class="comment">                     */</span></div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;                    CopyRgn(<a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>);</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;                    GreOffsetRgn(<a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, -pt.x, -pt.y);</div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160; </div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;                    wClipValid = SubtractRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;                                             <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;                                             <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>);</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;                }</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160; </div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;                <span class="keywordflow">if</span> (wClipValid != ERROR &amp;&amp; wClipValid != NULLREGION) {</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;                    GreOffsetRgn(<a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>, dx, dy);</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160; </div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;                    wClipValid = SubtractRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;                                             <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>,</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;                                             <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>);</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;                }</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;            }</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160; </div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;            <span class="keywordflow">if</span> (wClipValid == ERROR)</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;                <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        }</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160; </div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;<span class="comment">         * If he wants a rectangle but no region, use hrgnScrl2 as a temp.</span></div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;        <span class="keywordflow">if</span> (hrgnUpdate == NULL &amp;&amp; HIWORD(prcUpdate))</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;            hrgnUpdate = <a class="code" href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a>;</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160; </div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;        <span class="keywordflow">if</span> (hrgnUpdate != NULL) {</div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160; </div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;<span class="comment">             * Update = (Src | Dst) - Valid.</span></div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;            wClip = UnionRgn(hrgnUpdate, <a class="code" href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a>, <a class="code" href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a>);</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;            <span class="keywordflow">if</span> (wClip == ERROR)</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;                <span class="keywordflow">goto</span> ErrorExit;</div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160; </div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;            <span class="keywordflow">if</span> (wClipValid != NULLREGION)</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;                wClip = SubtractRgn(hrgnUpdate, hrgnUpdate, <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>);</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160; </div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;            <span class="keywordflow">if</span> (HIWORD(prcUpdate))</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;                GreGetRgnBox(hrgnUpdate, prcUpdate);</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;        }</div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160; </div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;        <span class="keywordflow">if</span> (wClipValid != NULLREGION) {</div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160; </div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;<span class="preprocessor">            #ifdef LATER</span></div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160; </div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;                <span class="comment">/*</span></div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;<span class="comment">                 * don&#39;t use the visrgn here</span></div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;<span class="comment">                 */</span></div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;                HRGN hrgnSaveVis = GreCreateRectRgn(0, 0, 0, 0);</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160; </div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;                <span class="keywordflow">if</span> (hrgnSaveVis != NULL) {</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160; </div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;                    BOOL fClipped;</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160; </div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;                    fClipped = (GreGetRandomRgn(hdc, hrgnSaveVis, 1) == 1);</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;                    GreExtSelectClipRgn(hdc, <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, RGN_COPY);</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160; </div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;                    <span class="comment">/*</span></div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;<span class="comment">                     * If the DC is in a funny map mode, then be sure to</span></div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;<span class="comment">                     * map from device to logical coordinates for BLT call...</span></div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;<span class="comment">                     */</span></div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;                    <span class="keywordflow">if</span> (fLogUnits)</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;                        GreDPtoLP(hdc, (LPPOINT)&amp;rcDst, 2);</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160; </div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;                    <span class="comment">/*</span></div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;<span class="comment">                     * Gdi can take along time to process this call if</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;<span class="comment">                     * it&#39;s a printer DC</span></div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;<span class="comment">                     */</span></div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;                    GreBitBlt(hdc,</div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;                              rcDst.left,</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;                              rcDst.top,</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;                              rcDst.right - rcDst.left,</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;                              rcDst.bottom - rcDst.top,</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;                              hdc,</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;                              rcDst.left - dxLog,</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;                              rcDst.top - dyLog,</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;                              SRCCOPY,</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;                              0);</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160; </div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;                    GreExtSelectClipRgn(hdc,</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;                                        (fClipped ? hrgnSaveVis : NULL),</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;                                        RGN_COPY);</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160; </div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;                    GreDeleteObject(hrgnSaveVis);</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;                }</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160; </div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;<span class="preprocessor">            #else</span></div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160; </div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;                <span class="comment">/*</span></div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;<span class="comment">                 * Visrgn is expected in screen coordinates: offset</span></div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;<span class="comment">                 * as appropriate.</span></div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;<span class="comment">                 */</span></div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;                GreOffsetRgn(<a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, pt.x, pt.y);</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160; </div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;                <span class="comment">/*</span></div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;<span class="comment">                 * Select in the temporary vis rgn, saving the old</span></div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;<span class="comment">                 */</span></div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160; </div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;                GreSelectVisRgn(hdc, <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, NULL, SVR_SWAP);</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160; </div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;                <span class="comment">/*</span></div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;<span class="comment">                 * If the DC is in a funny map mode, then be sure to map from</span></div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;<span class="comment">                 * device to logical coordinates for BLT call...</span></div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;<span class="comment">                 */</span></div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;                <span class="keywordflow">if</span> (fLogUnits)</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;                    GreDPtoLP(hdc, (LPPOINT)&amp;rcDst, 2);</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160; </div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;                <span class="comment">/*</span></div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;<span class="comment">                 * Gdi can take along time to process this call if it&#39;s</span></div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;<span class="comment">                 * a printer DC.</span></div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;<span class="comment">                 */</span></div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;                GreBitBlt(hdc,</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;                          rcDst.left,</div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;                          rcDst.top,</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;                          rcDst.right - rcDst.left,</div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;                          rcDst.bottom - rcDst.top,</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;                          hdc,</div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;                          rcDst.left - dxLog,</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;                          rcDst.top - dyLog,</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;                          SRCCOPY,</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;                          0);</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160; </div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;                <span class="comment">/*</span></div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;<span class="comment">                 * Restore the old vis rgn, leaving hrgnScrlValid with</span></div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;<span class="comment">                 * a valid rgn</span></div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;<span class="comment">                 */</span></div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;                GreSelectVisRgn(hdc, <a class="code" href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a>, NULL, SVR_SWAP);</div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160; </div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;<span class="preprocessor">            #endif</span></div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;        }</div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;    }</div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160; </div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;<span class="comment">     * If necessary, convert the resultant update rect back</span></div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;<span class="comment">     * to logical coordinates.</span></div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;    <span class="keywordflow">if</span> (fLogUnits &amp;&amp; HIWORD(prcUpdate))</div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;        GreDPtoLP(hdc, (LPPOINT)prcUpdate, 2);</div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160; </div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;    GreUnlockDisplay(<a class="code" href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a>-&gt;<a class="code" href="a02605.html#a5e0929a8ef013061be966961b2eddbff">pDevLock</a>);</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160; </div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;    <span class="keywordflow">return</span> wClip;</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00935_source.html#l00391">CopyRect()</a>, <a class="el" href="a00935_source.html#l00285">EqualRect()</a>, <a class="el" href="a00836_source.html#l00030">GetTrueClipRgn()</a>, <a class="el" href="a03257_source.html#l00125">gpDispInfo</a>, <a class="el" href="a03257_source.html#l00439">hrgnInvalid</a>, <a class="el" href="a03257_source.html#l00461">hrgnScrl1</a>, <a class="el" href="a03257_source.html#l00462">hrgnScrl2</a>, <a class="el" href="a03257_source.html#l00465">hrgnScrlDst</a>, <a class="el" href="a03257_source.html#l00464">hrgnScrlSrc</a>, <a class="el" href="a03257_source.html#l00466">hrgnScrlValid</a>, <a class="el" href="a03257_source.html#l00463">hrgnScrlVis</a>, <a class="el" href="a00935_source.html#l00184">IntersectRect()</a>, <a class="el" href="a00365_source.html#l01577">tagDISPLAYINFO::pDevLock</a>, <a class="el" href="a00935_source.html#l00414">SetRectEmpty()</a>, <a class="el" href="a00935_source.html#l00316">SubtractRect()</a> , 以及 <a class="el" href="a00935_source.html#l00233">UnionRect()</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a00836_source.html#l00642">_ScrollDC()</a> , 以及 <a class="el" href="a00836_source.html#l00731">xxxScrollWindowEx()</a>.</p>

</div>
</div>
<a id="a1cef636c724052493ab55c00c4ca21f3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1cef636c724052493ab55c00c4ca21f3">&#9670;&nbsp;</a></span>xxxScrollWindowEx()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">int xxxScrollWindowEx </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00365.html#a1a2ef1c363aa0787a8f8a7dde2a34aaf">PWND</a>&#160;</td>
          <td class="paramname"><em>pwnd</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>dx</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>dy</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">RECT *&#160;</td>
          <td class="paramname"><em>prcScroll</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">RECT *&#160;</td>
          <td class="paramname"><em>prcClip</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">HRGN&#160;</td>
          <td class="paramname"><em>hrgnUpdate</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPRECT&#160;</td>
          <td class="paramname"><em>prcUpdate</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a>&#160;</td>
          <td class="paramname"><em>flags</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00836_source.html">scrollw.c</a> 第 <a class="el" href="a00836_source.html#l00731">731</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;{</div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;    <a class="code" href="a00953.html#a392e62da233ed3e2f7c3fd4f487a3896">INT</a>    code;</div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;    HDC    hdc;</div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;    <span class="keywordtype">int</span>    dxDev;</div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;    <span class="keywordtype">int</span>    dyDev;</div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;    RECT   rcSrcDev;</div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;    RECT   rcSpb, rcSrc;</div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;    <a class="code" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a>  flagsDCX;</div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;    BOOL   fHideCaret;</div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;    BOOL   fRcScroll = (BOOL)HIWORD(prcScroll);</div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;    BOOL   fInvisible = FALSE;</div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;    <a class="code" href="a02653.html">PCARET</a> pcaret;</div>
<div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;    POINT  pt;</div>
<div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;    <a class="code" href="a01881.html">TL</a>     tlpwndChild;</div>
<div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;    HRGN   <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>;</div>
<div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160; </div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;    <a class="code" href="a00899.html#a70b09c3e2b495630f4205d34be505afb">CheckLock</a>(pwnd);</div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160; </div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;    <span class="keywordflow">if</span> (pwnd == NULL)</div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;        pwnd = <a class="code" href="a00257.html#a8315d2c807ba18ba9e528c40614b6173">PtiCurrent</a>()-&gt;<a class="code" href="a02889.html#abb1184e0c5805b5ad89b79dcc2bd17c8">rpdesk</a>-&gt;<a class="code" href="a02801.html#a76d4881aa4c15330103e83a80e6b5dc7">pDeskInfo</a>-&gt;<a class="code" href="a02609.html#a68937d60a6f49b7a8431db62b38ea721">spwnd</a>;       <span class="comment">// pwndDesktop</span></div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160; </div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;<span class="comment">     * If nothing&#39;s moving, nothing to do.</span></div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;    <span class="keywordflow">if</span> ((dx | dy) == 0 ) {</div>
<div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160; </div>
<div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;        <span class="keywordflow">goto</span> DoNothing;</div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160; </div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!<a class="code" href="a00365.html#ad3225ce06580cb58802233512f3d9c81">IsVisible</a>(pwnd)) {</div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160; </div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;        <span class="comment">/* We want to offset our children if we&#39;re not minimized.  IsVisible()</span></div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;<span class="comment">         * will return FALSE if we&#39;re minimized, invisible, or the child of</span></div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;<span class="comment">         * a minimized/invisible ancestore.</span></div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;        <span class="keywordflow">if</span> (!TestWF(pwnd, WFMINIMIZED) &amp;&amp;</div>
<div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;          (flags &amp; SW_SCROLLCHILDREN) &amp;&amp;</div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;          !fRcScroll) {</div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160; </div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;            fInvisible = TRUE;</div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;            flags &amp;= ~SW_INVALIDATE;</div>
<div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;        }</div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160; </div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;DoNothing:</div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160; </div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;        <span class="keywordflow">if</span> (hrgnUpdate != NULL)</div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;            GreSetRectRgn(hrgnUpdate, 0, 0, 0, 0);</div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160; </div>
<div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;        <span class="keywordflow">if</span> (HIWORD(prcUpdate) != 0)</div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;            <a class="code" href="a00935.html#a6f9d1e9b327899127c080496900d48d9">SetRectEmpty</a>(prcUpdate);</div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160; </div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;        <span class="keywordflow">if</span> (!fInvisible)</div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;            <span class="keywordflow">return</span> NULLREGION;</div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;    }</div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160; </div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;<span class="comment">     * Hide the caret.</span></div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;    fHideCaret = FALSE;</div>
<div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160; </div>
<div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;    <span class="keywordflow">if</span> (!fInvisible) {</div>
<div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;        pcaret = &amp;<a class="code" href="a00257.html#a8315d2c807ba18ba9e528c40614b6173">PtiCurrent</a>()-&gt;<a class="code" href="a02889.html#aea8fcdf7513cfa8972ff27524296079b">pq</a>-&gt;<a class="code" href="a02869.html#ade15a80896abdba1533b909440c29699">caret</a>;</div>
<div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;        <span class="keywordflow">if</span> (pcaret-&gt;<a class="code" href="a02653.html#a68937d60a6f49b7a8431db62b38ea721">spwnd</a> != NULL &amp;&amp; <a class="code" href="a00365.html#abd272d555fe4a691f526815378818677">_IsDescendant</a>(pcaret-&gt;<a class="code" href="a02653.html#a68937d60a6f49b7a8431db62b38ea721">spwnd</a>, pwnd)) {</div>
<div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;            fHideCaret = TRUE;</div>
<div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;            <a class="code" href="a00620.html#a1376ba7ebe3f4b2ab5ebe9fa20b3ed87">InternalHideCaret</a>();</div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;        }</div>
<div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;    }</div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160; </div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;<span class="comment">     * If scrollwindow, and window is clipchildren, use a cache entry.</span></div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;<span class="comment">     * Otherwise, always use a</span></div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;<span class="comment">     *</span></div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;<span class="comment">     * Determine what kind of DC we&#39;ll be needing.  If the DCX_CACHE bit</span></div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;<span class="comment">     * isn&#39;t set, it means that we&#39;ll be operating in logical coordinates.</span></div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;    <span class="keywordflow">if</span> (flags &amp; SW_SCROLLWINDOW) {</div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160; </div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;<span class="comment">         *  ScrollWindow() call: use the cache if not OWNDC or CLASSDC.</span></div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;        flagsDCX = DCX_USESTYLE;</div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;        <span class="keywordflow">if</span> (!TestCF(pwnd, CFOWNDC) &amp;&amp; !TestCF(pwnd, CFCLASSDC))</div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;            flagsDCX |= DCX_CACHE;</div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160; </div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;<span class="comment">         * If SW_SCROLLCHILDREN (i.e., lprcScroll == NULL) and CLIPCHILDREN,</span></div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;<span class="comment">         * then use the cache and don&#39;t clip children.</span></div>
<div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;<span class="comment">         * This is screwy, but 3.0 backward compatible.</span></div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;        <span class="keywordflow">if</span> ((flags &amp; SW_SCROLLCHILDREN) &amp;&amp; TestWF(pwnd, WFCLIPCHILDREN))</div>
<div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;            flagsDCX |= DCX_NOCLIPCHILDREN | DCX_CACHE;</div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160; </div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160; </div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;<span class="comment">         * ScrollWindowEx() call: always use the cache</span></div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;        flagsDCX = DCX_USESTYLE | DCX_CACHE;</div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160; </div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;<span class="comment">         * if SW_SCROLLCHILDREN, always use noclipchildren.</span></div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;        <span class="keywordflow">if</span> (flags &amp; SW_SCROLLCHILDREN)</div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;            flagsDCX |= DCX_NOCLIPCHILDREN;</div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;    }</div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160; </div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;    hdc = <a class="code" href="a00257.html#af4d8743272a8eb22e205078faaed38c5">_GetDCEx</a>(pwnd, NULL, flagsDCX);</div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160; </div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;    <span class="keywordflow">if</span> (flags &amp; SW_INVALIDATE) {</div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160; </div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;<span class="comment">         * Get device origin while DC is valid, for later offsetting</span></div>
<div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;        GreGetDCOrg(hdc, &amp;pt);</div>
<div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160; </div>
<div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;<span class="comment">         * If the user didn&#39;t give us a region to use, use hrgnSW.</span></div>
<div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;        <span class="keywordflow">if</span> (hrgnUpdate == NULL)</div>
<div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;            hrgnUpdate = <a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>;</div>
<div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;    }</div>
<div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160; </div>
<div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;<span class="comment">     * The DC will be in some logical coordinate system if OWNDC or CLASSDC.</span></div>
<div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160;    <span class="keywordflow">if</span> (!fRcScroll) {</div>
<div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;        prcScroll = &amp;rcSrc;</div>
<div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160; </div>
<div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;<span class="comment">         * IMPORTANT:</span></div>
<div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;<span class="comment">         * We have to use CopyOffsetRect() here because GetClientRect() gives</span></div>
<div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;<span class="comment">         * unreliable results for minimized windows.  3.1 dudes get told that</span></div>
<div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160;<span class="comment">         * their client is non-empty, for compatibility reasons.</span></div>
<div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;        <a class="code" href="a00365.html#ac638a1ce39dd10773c0133549503776e">CopyOffsetRect</a>(prcScroll,</div>
<div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;                       &amp;pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>,</div>
<div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;                       -pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left,</div>
<div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;                       -pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160; </div>
<div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160;<span class="comment">         * If the DC might be a screwy one, then map the</span></div>
<div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;<span class="comment">         * rect to logical units.</span></div>
<div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;        <span class="keywordflow">if</span> (!(flagsDCX &amp; DCX_CACHE))</div>
<div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160;            GreDPtoLP(hdc, (LPPOINT)&amp;rcSrc, 2);</div>
<div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;    }</div>
<div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160; </div>
<div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;<span class="comment">     * If the DC is in logical coordinates, map *prcScroll and dx, dy</span></div>
<div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;<span class="comment">     * to device units for use later.</span></div>
<div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160;    dxDev = dx;</div>
<div class="line"><a name="l00891"></a><span class="lineno">  891</span>&#160;    dyDev = dy;</div>
<div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;    rcSrcDev = *prcScroll;</div>
<div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160; </div>
<div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160;    <span class="keywordflow">if</span> (!(flagsDCX &amp; DCX_CACHE)) {</div>
<div class="line"><a name="l00895"></a><span class="lineno">  895</span>&#160; </div>
<div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160;        POINT rgpt[2];</div>
<div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160; </div>
<div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;        GreLPtoDP(hdc, (POINT FAR*)&amp;rcSrcDev, 2);</div>
<div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160; </div>
<div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160;<span class="comment">         * The delta values must be treated as a vector from</span></div>
<div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;<span class="comment">         * the point (0, 0) to (dx, dy).  Scale it as such, then</span></div>
<div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;<span class="comment">         * compute the difference.  This handles flipped coordinate systems.</span></div>
<div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;        rgpt[0].x = rgpt[0].y = 0;</div>
<div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;        rgpt[1].x = dx;</div>
<div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;        rgpt[1].y = dy;</div>
<div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160; </div>
<div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;        GreLPtoDP(hdc, rgpt, 2);</div>
<div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160; </div>
<div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;        dxDev = rgpt[1].x - rgpt[0].x;</div>
<div class="line"><a name="l00912"></a><span class="lineno">  912</span>&#160;        dyDev = rgpt[1].y - rgpt[0].y;</div>
<div class="line"><a name="l00913"></a><span class="lineno">  913</span>&#160;    }</div>
<div class="line"><a name="l00914"></a><span class="lineno">  914</span>&#160; </div>
<div class="line"><a name="l00915"></a><span class="lineno">  915</span>&#160;    <span class="keywordflow">if</span> (fInvisible)</div>
<div class="line"><a name="l00916"></a><span class="lineno">  916</span>&#160;        code = NULLREGION;</div>
<div class="line"><a name="l00917"></a><span class="lineno">  917</span>&#160;    <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00918"></a><span class="lineno">  918</span>&#160; </div>
<div class="line"><a name="l00919"></a><span class="lineno">  919</span>&#160;        <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = pwnd-&gt;<a class="code" href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">hrgnUpdate</a>;</div>
<div class="line"><a name="l00920"></a><span class="lineno">  920</span>&#160;        <span class="keywordflow">if</span> ((flags &amp; SW_SCROLLWINDOW) &amp;&amp; !TestWF(pwnd, WFWIN31COMPAT)) {</div>
<div class="line"><a name="l00921"></a><span class="lineno">  921</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00922"></a><span class="lineno">  922</span>&#160;<span class="comment">             * 3.0 Backward compatibility hack:</span></div>
<div class="line"><a name="l00923"></a><span class="lineno">  923</span>&#160;<span class="comment">             * The following incorrect code is what 3.0 used to do, and</span></div>
<div class="line"><a name="l00924"></a><span class="lineno">  924</span>&#160;<span class="comment">             * there are apps such as Finale and Scrapbook+ that have worked</span></div>
<div class="line"><a name="l00925"></a><span class="lineno">  925</span>&#160;<span class="comment">             * around this bug in ways that don&#39;t work with the &quot;correct&quot; code.</span></div>
<div class="line"><a name="l00926"></a><span class="lineno">  926</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00927"></a><span class="lineno">  927</span>&#160;            <span class="keywordflow">if</span> (pwnd-&gt;<a class="code" href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">hrgnUpdate</a> &gt; MAXREGION) {</div>
<div class="line"><a name="l00928"></a><span class="lineno">  928</span>&#160;                RECT rc;</div>
<div class="line"><a name="l00929"></a><span class="lineno">  929</span>&#160; </div>
<div class="line"><a name="l00930"></a><span class="lineno">  930</span>&#160;                GreGetRgnBox(pwnd-&gt;<a class="code" href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">hrgnUpdate</a>, &amp;rc);</div>
<div class="line"><a name="l00931"></a><span class="lineno">  931</span>&#160;                <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&amp;rc,</div>
<div class="line"><a name="l00932"></a><span class="lineno">  932</span>&#160;                           dxDev - pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left,</div>
<div class="line"><a name="l00933"></a><span class="lineno">  933</span>&#160;                           dyDev - pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l00934"></a><span class="lineno">  934</span>&#160; </div>
<div class="line"><a name="l00935"></a><span class="lineno">  935</span>&#160;                <a class="code" href="a00896.html#a487301eed51abdcd2b3920954855e848">xxxRedrawWindow</a>(pwnd,</div>
<div class="line"><a name="l00936"></a><span class="lineno">  936</span>&#160;                                &amp;rc, NULL,</div>
<div class="line"><a name="l00937"></a><span class="lineno">  937</span>&#160;                                RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN);</div>
<div class="line"><a name="l00938"></a><span class="lineno">  938</span>&#160;            }</div>
<div class="line"><a name="l00939"></a><span class="lineno">  939</span>&#160; </div>
<div class="line"><a name="l00940"></a><span class="lineno">  940</span>&#160;            <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a> = NULL;</div>
<div class="line"><a name="l00941"></a><span class="lineno">  941</span>&#160;        }</div>
<div class="line"><a name="l00942"></a><span class="lineno">  942</span>&#160; </div>
<div class="line"><a name="l00943"></a><span class="lineno">  943</span>&#160;        code = <a class="code" href="a00836.html#a9c15f7cde7f639a841e61fa332a07992">InternalScrollDC</a>(hdc,</div>
<div class="line"><a name="l00944"></a><span class="lineno">  944</span>&#160;                                dx,</div>
<div class="line"><a name="l00945"></a><span class="lineno">  945</span>&#160;                                dy,</div>
<div class="line"><a name="l00946"></a><span class="lineno">  946</span>&#160;                                prcScroll,</div>
<div class="line"><a name="l00947"></a><span class="lineno">  947</span>&#160;                                prcClip,</div>
<div class="line"><a name="l00948"></a><span class="lineno">  948</span>&#160;                                <a class="code" href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a>,</div>
<div class="line"><a name="l00949"></a><span class="lineno">  949</span>&#160;                                hrgnUpdate,</div>
<div class="line"><a name="l00950"></a><span class="lineno">  950</span>&#160;                                prcUpdate,</div>
<div class="line"><a name="l00951"></a><span class="lineno">  951</span>&#160;                                !(flagsDCX &amp; DCX_CACHE));</div>
<div class="line"><a name="l00952"></a><span class="lineno">  952</span>&#160;    }</div>
<div class="line"><a name="l00953"></a><span class="lineno">  953</span>&#160; </div>
<div class="line"><a name="l00954"></a><span class="lineno">  954</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00955"></a><span class="lineno">  955</span>&#160;<span class="comment">     * Release the hdc we used.</span></div>
<div class="line"><a name="l00956"></a><span class="lineno">  956</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00957"></a><span class="lineno">  957</span>&#160;    <a class="code" href="a00644.html#a1ec030500a19f775519fbaf16c15f814">_ReleaseDC</a>(hdc);</div>
<div class="line"><a name="l00958"></a><span class="lineno">  958</span>&#160; </div>
<div class="line"><a name="l00959"></a><span class="lineno">  959</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00960"></a><span class="lineno">  960</span>&#160;<span class="comment">     * Check the union of the src and dst rectangle against any SPBs.</span></div>
<div class="line"><a name="l00961"></a><span class="lineno">  961</span>&#160;<span class="comment">     * We do this because the window</span></div>
<div class="line"><a name="l00962"></a><span class="lineno">  962</span>&#160;<span class="comment">     * might be completely obscured by some window with an SPB, but</span></div>
<div class="line"><a name="l00963"></a><span class="lineno">  963</span>&#160;<span class="comment">     * since we&#39;re completely covered no BitBlt call will be made</span></div>
<div class="line"><a name="l00964"></a><span class="lineno">  964</span>&#160;<span class="comment">     * to accumulate bounds in that area.</span></div>
<div class="line"><a name="l00965"></a><span class="lineno">  965</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00966"></a><span class="lineno">  966</span>&#160;    <span class="keywordflow">if</span> (!fInvisible &amp;&amp; AnySpbs()) {</div>
<div class="line"><a name="l00967"></a><span class="lineno">  967</span>&#160; </div>
<div class="line"><a name="l00968"></a><span class="lineno">  968</span>&#160;        <span class="keywordflow">if</span> (fRcScroll) {</div>
<div class="line"><a name="l00969"></a><span class="lineno">  969</span>&#160;            rcSrc = rcSrcDev;</div>
<div class="line"><a name="l00970"></a><span class="lineno">  970</span>&#160;            <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&amp;rcSrc, pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left, pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l00971"></a><span class="lineno">  971</span>&#160; </div>
<div class="line"><a name="l00972"></a><span class="lineno">  972</span>&#160;            rcSpb = rcSrc;</div>
<div class="line"><a name="l00973"></a><span class="lineno">  973</span>&#160;            <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&amp;rcSpb, dxDev, dyDev);</div>
<div class="line"><a name="l00974"></a><span class="lineno">  974</span>&#160;            <a class="code" href="a00935.html#ae447c29296398f6e6ae0f28d192e606d">UnionRect</a>(&amp;rcSpb, &amp;rcSpb, &amp;rcSrc);</div>
<div class="line"><a name="l00975"></a><span class="lineno">  975</span>&#160; </div>
<div class="line"><a name="l00976"></a><span class="lineno">  976</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00977"></a><span class="lineno">  977</span>&#160; </div>
<div class="line"><a name="l00978"></a><span class="lineno">  978</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l00979"></a><span class="lineno">  979</span>&#160;<span class="comment">             * Use the entire client area.</span></div>
<div class="line"><a name="l00980"></a><span class="lineno">  980</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l00981"></a><span class="lineno">  981</span>&#160;            rcSpb = pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>;</div>
<div class="line"><a name="l00982"></a><span class="lineno">  982</span>&#160;        }</div>
<div class="line"><a name="l00983"></a><span class="lineno">  983</span>&#160; </div>
<div class="line"><a name="l00984"></a><span class="lineno">  984</span>&#160;        <a class="code" href="a00860.html#a682e7a615d4877278df80629d78c3081">SpbCheckRect</a>(pwnd, &amp;rcSpb, 0);</div>
<div class="line"><a name="l00985"></a><span class="lineno">  985</span>&#160;    }</div>
<div class="line"><a name="l00986"></a><span class="lineno">  986</span>&#160; </div>
<div class="line"><a name="l00987"></a><span class="lineno">  987</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00988"></a><span class="lineno">  988</span>&#160;<span class="comment">     * If this guy wants to scroll his children, go at it.  Only scroll those</span></div>
<div class="line"><a name="l00989"></a><span class="lineno">  989</span>&#160;<span class="comment">     * children intersecting prcScroll.  Then invalidate any vis rgns</span></div>
<div class="line"><a name="l00990"></a><span class="lineno">  990</span>&#160;<span class="comment">     * calculated for these child windows.</span></div>
<div class="line"><a name="l00991"></a><span class="lineno">  991</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00992"></a><span class="lineno">  992</span>&#160;    <span class="keywordflow">if</span> (flags &amp; SW_SCROLLCHILDREN) {</div>
<div class="line"><a name="l00993"></a><span class="lineno">  993</span>&#160; </div>
<div class="line"><a name="l00994"></a><span class="lineno">  994</span>&#160;        RECT rc;</div>
<div class="line"><a name="l00995"></a><span class="lineno">  995</span>&#160; </div>
<div class="line"><a name="l00996"></a><span class="lineno">  996</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00997"></a><span class="lineno">  997</span>&#160;<span class="comment">         * If this window has the caret then offset it if:</span></div>
<div class="line"><a name="l00998"></a><span class="lineno">  998</span>&#160;<span class="comment">         * a) The whole window is scrolling</span></div>
<div class="line"><a name="l00999"></a><span class="lineno">  999</span>&#160;<span class="comment">         * b) The rectangle scrolled contains the caret rectangle</span></div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160;        <span class="keywordflow">if</span> (!fInvisible &amp;&amp; (pwnd == pcaret-&gt;<a class="code" href="a02653.html#a68937d60a6f49b7a8431db62b38ea721">spwnd</a>)) {</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160; </div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160;            <span class="keywordflow">if</span> (fRcScroll)</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160;                <a class="code" href="a00935.html#a479bbe69c871894f6ca23dfa237481ad">SetRect</a>(&amp;rc,</div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160;                        pcaret-&gt;<a class="code" href="a02653.html#a6150e0515f7202e2fb518f7206ed97dc">x</a>,</div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160;                        pcaret-&gt;<a class="code" href="a02653.html#a0a2f84ed7838f07779ae24c5a9086d33">y</a>,</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160;                        pcaret-&gt;<a class="code" href="a02653.html#a6150e0515f7202e2fb518f7206ed97dc">x</a> + pcaret-&gt;<a class="code" href="a02653.html#af905a9989361d094908ad04e08f6429d">cx</a>,</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160;                        pcaret-&gt;<a class="code" href="a02653.html#a0a2f84ed7838f07779ae24c5a9086d33">y</a> + pcaret-&gt;<a class="code" href="a02653.html#ad36501a70b25e18bcf48dd6e03392305">cy</a>);</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160; </div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160;            <span class="keywordflow">if</span> (!fRcScroll || <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&amp;rc, &amp;rc, &amp;rcSrcDev)) {</div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160;                pcaret-&gt;<a class="code" href="a02653.html#a6150e0515f7202e2fb518f7206ed97dc">x</a> += dxDev;</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160;                pcaret-&gt;<a class="code" href="a02653.html#a0a2f84ed7838f07779ae24c5a9086d33">y</a> += dyDev;</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160;            }</div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;        }</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160; </div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160;        <span class="keywordflow">if</span> (fRcScroll) {</div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160; </div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160;<span class="comment">             * Create a copy of prcScroll and map to absolute coordinates...</span></div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160;            rc = rcSrcDev;</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>&#160;            <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&amp;rc, pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left, pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160;        }</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160; </div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160;        <span class="keywordflow">if</span> (pwnd-&gt;<a class="code" href="a02581.html#a6171c9000ea2060597a9bcf498ee0316">spwndChild</a>) {</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160; </div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160;            <a class="code" href="a00872.html#a6790f24888ee57e445fd3eb5b90fae39">OffsetChildren</a>(pwnd,</div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160;                           dxDev,</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160;                           dyDev,</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160;                           (fRcScroll ? (LPRECT)&amp;rc : NULL));</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160; </div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160;            <span class="comment">/*</span></div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160;<span class="comment">             * If we&#39;re clipchildren, then shuffling our children</span></div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160;<span class="comment">             * will affect our client visrgn (but not our window visrgn).</span></div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160;<span class="comment">             * Otherwise, only our children&#39;s</span></div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160;<span class="comment">             * visrgns were affected by the scroll.</span></div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160;<span class="comment">             */</span></div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160;            <a class="code" href="a00644.html#a69728f013275d0f4332dded4eb2432a3">InvalidateDCCache</a>(pwnd,</div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;                              TestWF(pwnd, WFCLIPCHILDREN) ?</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160;                                  IDC_CLIENTONLY : IDC_CHILDRENONLY);</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160; </div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;        }</div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160;    }</div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160; </div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;    <span class="keywordflow">if</span> (flags &amp; SW_INVALIDATE) {</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160; </div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>&#160;<span class="comment">         * If the caller supplied a region, invalidate using a copy,</span></div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160;<span class="comment">         * because InternalInvalidate may trash the passed-in region.</span></div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160;        <span class="keywordflow">if</span> (hrgnUpdate != <a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>)</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160;            CopyRgn(<a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>, hrgnUpdate);</div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160; </div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160;<span class="comment">         * Make hrgnSW screen-relative before invalidation...</span></div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160;        GreOffsetRgn(<a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>, pt.x, pt.y);</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160; </div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160;        <a class="code" href="a00896.html#af920796d5612f833ca2179b07a008e69">xxxInternalInvalidate</a>(</div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160;                pwnd,</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160;                <a class="code" href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a>,</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160;                (flags &amp; SW_ERASE) ?</div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160;                    (RDW_INVALIDATE | RDW_ALLCHILDREN | RDW_ERASE) :</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160;                    (RDW_INVALIDATE | RDW_ALLCHILDREN));</div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;    }</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160; </div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;<span class="comment">     * Send child move messages if needed.</span></div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160;    <span class="keywordflow">if</span> (flags &amp; SW_SCROLLCHILDREN) {</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160; </div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160;        <a class="code" href="a02581.html">PWND</a> pwndChild;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;        RECT rc;</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160;        RECT rcScrolledChildren;</div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160; </div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;<span class="comment">         * NOTE: the following code will send MOVE messages</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160;<span class="comment">         * to windows that didn&#39;t move but were in the source rectangle.</span></div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160;<span class="comment">         * This is not a big deal, and definitely not worth fixing.</span></div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160;        <span class="keywordflow">if</span> (fRcScroll) {</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160;            rcScrolledChildren = rcSrcDev;</div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>&#160;            <a class="code" href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a>(&amp;rcScrolledChildren,</div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160;                    dxDev + pwnd-&gt;<a class="code" href="a02581.html#a6053af0b243b6737640988eb63081de3">spwndParent</a>-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left,</div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160;                    dyDev + pwnd-&gt;<a class="code" href="a02581.html#a6053af0b243b6737640988eb63081de3">spwndParent</a>-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top);</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;        }</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160; </div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160;        pwndChild = pwnd-&gt;<a class="code" href="a02581.html#a6171c9000ea2060597a9bcf498ee0316">spwndChild</a>;</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160;        <span class="keywordflow">while</span> (pwndChild != NULL) {</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160; </div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160;            ThreadLockAlways(pwndChild, &amp;tlpwndChild);</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160; </div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160;            <span class="keywordflow">if</span> (!fRcScroll ||</div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;                <a class="code" href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a>(&amp;rc, &amp;rcScrolledChildren, &amp;pwndChild-&gt;<a class="code" href="a02581.html#a2778d611c2b27395e559c94d05732e1f">rcWindow</a>)) {</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160; </div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160;                <span class="comment">/*</span></div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160;<span class="comment">                 * NOTE: Win 3.0 and below passed wParam == TRUE here.</span></div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160;<span class="comment">                 * This was not documented or used, so it was changed</span></div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160;<span class="comment">                 * to be consistent with the documentation.</span></div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160;<span class="comment">                 */</span></div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160;                <a class="code" href="a00842.html#a69cf2e14dcefd941469ad5126e40f79a">xxxSendMessage</a>(</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160;                        pwndChild,</div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160;                        WM_MOVE,</div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;                        0,</div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160;                        MAKELONG(pwndChild-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left - pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.left,</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160;                                 pwndChild-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top - pwnd-&gt;<a class="code" href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">rcClient</a>.top));</div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160;            }</div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160; </div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160;            pwndChild = pwndChild-&gt;<a class="code" href="a02581.html#af729b7de7a8fb84b70b70c4b401ce789">spwndNext</a>;</div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160; </div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160;            ThreadUnlock(&amp;tlpwndChild);</div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160;        }</div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;    }</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160; </div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160;    <span class="keywordflow">if</span> (fHideCaret) {</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160; </div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160;<span class="comment">         * Show the caret again.</span></div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160;        <a class="code" href="a00620.html#abaf8f946537e0303f6ba99f21d716670">InternalShowCaret</a>();</div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;    }</div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160; </div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160;<span class="comment">     * Return the region code.</span></div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160;    <span class="keywordflow">return</span> code;</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00257.html#af4d8743272a8eb22e205078faaed38c5">_GetDCEx()</a>, <a class="el" href="a03728_source.html#l00432">_IsDescendant()</a>, <a class="el" href="a00644_source.html#l00102">_ReleaseDC()</a>, <a class="el" href="a00899_source.html#l02182">tagQ::caret</a>, <a class="el" href="a00899.html#a70b09c3e2b495630f4205d34be505afb">CheckLock()</a>, <a class="el" href="a00935_source.html#l00067">CopyOffsetRect()</a>, <a class="el" href="a00365_source.html#l02246">tagCARET::cx</a>, <a class="el" href="a00365_source.html#l02245">tagCARET::cy</a>, <a class="el" href="a00563_source.html#l00175">DWORD</a>, <a class="el" href="a03257_source.html#l00439">hrgnInvalid</a>, <a class="el" href="a03257_source.html#l00460">hrgnSW</a>, <a class="el" href="a00365_source.html#l01406">tagWND::hrgnUpdate</a>, <a class="el" href="a00620_source.html#l00334">InternalHideCaret()</a>, <a class="el" href="a00836_source.html#l00067">InternalScrollDC()</a>, <a class="el" href="a00620_source.html#l00294">InternalShowCaret()</a>, <a class="el" href="a00935_source.html#l00184">IntersectRect()</a>, <a class="el" href="a00644_source.html#l01644">InvalidateDCCache()</a>, <a class="el" href="a03728_source.html#l00456">IsVisible()</a>, <a class="el" href="a00872_source.html#l04607">OffsetChildren()</a>, <a class="el" href="a00935_source.html#l00132">OffsetRect()</a>, <a class="el" href="a00899_source.html#l01706">tagDESKTOP::pDeskInfo</a>, <a class="el" href="a00899_source.html#l02273">tagTHREADINFO::pq</a>, <a class="el" href="a00263_source.html#l00526">PtiCurrent()</a>, <a class="el" href="a00365_source.html#l01399">tagWND::rcClient</a>, <a class="el" href="a00365_source.html#l01398">tagWND::rcWindow</a>, <a class="el" href="a00899_source.html#l02288">tagTHREADINFO::rpdesk</a>, <a class="el" href="a00935_source.html#l00021">SetRect()</a>, <a class="el" href="a00935_source.html#l00414">SetRectEmpty()</a>, <a class="el" href="a00860_source.html#l01031">SpbCheckRect()</a>, <a class="el" href="a00365_source.html#l01603">tagDESKTOPINFO::spwnd</a>, <a class="el" href="a00365_source.html#l02239">tagCARET::spwnd</a>, <a class="el" href="a00365_source.html#l01393">tagWND::spwndChild</a>, <a class="el" href="a00365_source.html#l01391">tagWND::spwndNext</a>, <a class="el" href="a00365_source.html#l01392">tagWND::spwndParent</a>, <a class="el" href="a00935_source.html#l00233">UnionRect()</a>, <a class="el" href="a00365_source.html#l02243">tagCARET::x</a>, <a class="el" href="a00896_source.html#l01257">xxxInternalInvalidate()</a>, <a class="el" href="a00896_source.html#l00302">xxxRedrawWindow()</a>, <a class="el" href="a00842_source.html#l00613">xxxSendMessage()</a> , 以及 <a class="el" href="a00365_source.html#l02244">tagCARET::y</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a03614_source.html#l04437">NtUserScrollWindowEx()</a>.</p>

</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="aa03257_html_a370e6d8fd1b15a3b96e8916cde9a7f09"><div class="ttname"><a href="a03257.html#a370e6d8fd1b15a3b96e8916cde9a7f09">hrgnScrl1</a></div><div class="ttdeci">HRGN hrgnScrl1</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00461">kernel/globals.c:461</a></div></div>
<div class="ttc" id="aa00644_html_a69728f013275d0f4332dded4eb2432a3"><div class="ttname"><a href="a00644.html#a69728f013275d0f4332dded4eb2432a3">InvalidateDCCache</a></div><div class="ttdeci">BOOL InvalidateDCCache(PWND pwndInvalid, DWORD flags)</div><div class="ttdef"><b>Definition:</b> <a href="a00644_source.html#l01644">dc.c:1644</a></div></div>
<div class="ttc" id="aa00896_html_a487301eed51abdcd2b3920954855e848"><div class="ttname"><a href="a00896.html#a487301eed51abdcd2b3920954855e848">xxxRedrawWindow</a></div><div class="ttdeci">BOOL xxxRedrawWindow(PWND pwnd, LPRECT lprcUpdate, HRGN hrgnUpdate, DWORD flags)</div><div class="ttdef"><b>Definition:</b> <a href="a00896_source.html#l00302">update.c:302</a></div></div>
<div class="ttc" id="aa03257_html_aed1964e1e99dd24b6c0b6f5396afc7b7"><div class="ttname"><a href="a03257.html#aed1964e1e99dd24b6c0b6f5396afc7b7">hrgnScrlValid</a></div><div class="ttdeci">HRGN hrgnScrlValid</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00466">kernel/globals.c:466</a></div></div>
<div class="ttc" id="aa02653_html"><div class="ttname"><a href="a02653.html">tagCARET</a></div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02238">user.h:2238</a></div></div>
<div class="ttc" id="aa00935_html_ae447c29296398f6e6ae0f28d192e606d"><div class="ttname"><a href="a00935.html#ae447c29296398f6e6ae0f28d192e606d">UnionRect</a></div><div class="ttdeci">BOOL APIENTRY UnionRect(LPRECT prcDst, CONST RECT *prcSrc1, CONST RECT *prcSrc2)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00233">rect.c:233</a></div></div>
<div class="ttc" id="aa02801_html_a76d4881aa4c15330103e83a80e6b5dc7"><div class="ttname"><a href="a02801.html#a76d4881aa4c15330103e83a80e6b5dc7">tagDESKTOP::pDeskInfo</a></div><div class="ttdeci">PDESKTOPINFO pDeskInfo</div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l01706">userk.h:1706</a></div></div>
<div class="ttc" id="aa00935_html_a479bbe69c871894f6ca23dfa237481ad"><div class="ttname"><a href="a00935.html#a479bbe69c871894f6ca23dfa237481ad">SetRect</a></div><div class="ttdeci">BOOL APIENTRY SetRect(LPRECT prc, int left, int top, int right, int bottom)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00021">rect.c:21</a></div></div>
<div class="ttc" id="aa03257_html_a11a75d31dd330968778abca1b9ef9906"><div class="ttname"><a href="a03257.html#a11a75d31dd330968778abca1b9ef9906">hrgnSW</a></div><div class="ttdeci">HRGN hrgnSW</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00460">kernel/globals.c:460</a></div></div>
<div class="ttc" id="aa00365_html_abd272d555fe4a691f526815378818677"><div class="ttname"><a href="a00365.html#abd272d555fe4a691f526815378818677">_IsDescendant</a></div><div class="ttdeci">BOOL _IsDescendant(PWND pwndParent, PWND pwndChild)</div><div class="ttdef"><b>Definition:</b> <a href="a03728_source.html#l00432">rtl/winmgr.c:432</a></div></div>
<div class="ttc" id="aa03257_html_a31a801a6f7836cef5d45ab70aa8aadc2"><div class="ttname"><a href="a03257.html#a31a801a6f7836cef5d45ab70aa8aadc2">hrgnScrlVis</a></div><div class="ttdeci">HRGN hrgnScrlVis</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00463">kernel/globals.c:463</a></div></div>
<div class="ttc" id="aa00953_html_a392e62da233ed3e2f7c3fd4f487a3896"><div class="ttname"><a href="a00953.html#a392e62da233ed3e2f7c3fd4f487a3896">INT</a></div><div class="ttdeci">int INT</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00006">bench.c:6</a></div></div>
<div class="ttc" id="aa00842_html_a69cf2e14dcefd941469ad5126e40f79a"><div class="ttname"><a href="a00842.html#a69cf2e14dcefd941469ad5126e40f79a">xxxSendMessage</a></div><div class="ttdeci">LONG xxxSendMessage(PWND pwnd, UINT message, DWORD wParam, LONG lParam)</div><div class="ttdef"><b>Definition:</b> <a href="a00842_source.html#l00613">sendmsg.c:613</a></div></div>
<div class="ttc" id="aa00257_html_a8315d2c807ba18ba9e528c40614b6173"><div class="ttname"><a href="a00257.html#a8315d2c807ba18ba9e528c40614b6173">PtiCurrent</a></div><div class="ttdeci">PTHREADINFO PtiCurrent(VOID)</div><div class="ttdef"><b>Definition:</b> <a href="a00263_source.html#l00526">winmgrc.c:526</a></div></div>
<div class="ttc" id="aa00620_html_a1376ba7ebe3f4b2ab5ebe9fa20b3ed87"><div class="ttname"><a href="a00620.html#a1376ba7ebe3f4b2ab5ebe9fa20b3ed87">InternalHideCaret</a></div><div class="ttdeci">void InternalHideCaret()</div><div class="ttdef"><b>Definition:</b> <a href="a00620_source.html#l00334">caret.c:334</a></div></div>
<div class="ttc" id="aa02581_html_af729b7de7a8fb84b70b70c4b401ce789"><div class="ttname"><a href="a02581.html#af729b7de7a8fb84b70b70c4b401ce789">tagWND::spwndNext</a></div><div class="ttdeci">struct tagWND * spwndNext</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01391">user.h:1391</a></div></div>
<div class="ttc" id="aa02581_html_a79d8579e0cf1a8fb985bc709e08f61ac"><div class="ttname"><a href="a02581.html#a79d8579e0cf1a8fb985bc709e08f61ac">tagWND::hrgnUpdate</a></div><div class="ttdeci">HRGN hrgnUpdate</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01406">user.h:1406</a></div></div>
<div class="ttc" id="aa00935_html_a59a3cfdacf3d0e5d10c20abee032cfc6"><div class="ttname"><a href="a00935.html#a59a3cfdacf3d0e5d10c20abee032cfc6">OffsetRect</a></div><div class="ttdeci">BOOL APIENTRY OffsetRect(LPRECT prc, int cx, int cy)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00132">rect.c:132</a></div></div>
<div class="ttc" id="aa00935_html_a1c87c29903dd37145cd93b64140a5d3a"><div class="ttname"><a href="a00935.html#a1c87c29903dd37145cd93b64140a5d3a">IntersectRect</a></div><div class="ttdeci">BOOL APIENTRY IntersectRect(LPRECT prcDst, CONST RECT *prcSrc1, CONST RECT *prcSrc2)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00184">rect.c:184</a></div></div>
<div class="ttc" id="aa00644_html_a1ec030500a19f775519fbaf16c15f814"><div class="ttname"><a href="a00644.html#a1ec030500a19f775519fbaf16c15f814">_ReleaseDC</a></div><div class="ttdeci">BOOL _ReleaseDC(HDC hdc)</div><div class="ttdef"><b>Definition:</b> <a href="a00644_source.html#l00102">dc.c:102</a></div></div>
<div class="ttc" id="aa00644_html_a6abd9613dcf1227e044eb29b61b1b4ae"><div class="ttname"><a href="a00644.html#a6abd9613dcf1227e044eb29b61b1b4ae">FastWindowFromDC</a></div><div class="ttdeci">PWND FastWindowFromDC(HDC hdc)</div><div class="ttdef"><b>Definition:</b> <a href="a00644_source.html#l01832">dc.c:1832</a></div></div>
<div class="ttc" id="aa03257_html_ab597263bdbb3441715804712fcf29e6d"><div class="ttname"><a href="a03257.html#ab597263bdbb3441715804712fcf29e6d">gpDispInfo</a></div><div class="ttdeci">PDISPLAYINFO gpDispInfo</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00125">kernel/globals.c:125</a></div></div>
<div class="ttc" id="aa00365_html_ac638a1ce39dd10773c0133549503776e"><div class="ttname"><a href="a00365.html#ac638a1ce39dd10773c0133549503776e">CopyOffsetRect</a></div><div class="ttdeci">BOOL APIENTRY CopyOffsetRect(LPRECT prcDst, CONST RECT *prcSrc, int cx, int cy)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00067">rect.c:67</a></div></div>
<div class="ttc" id="aa00563_html_a074685e97e89d6aa2accdfcb82328699"><div class="ttname"><a href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a></div><div class="ttdeci">ddeml v[i&lt; inst &gt;][t&lt; type &gt;][hObj|pObj] Dump DDEML state information ddeml lists all ddeml instances for this process n ddeml t&lt; type &gt; lists all ddeml objects of the given type n n assumes link is first DWORD</div><div class="ttdef"><b>Definition:</b> <a href="a00563_source.html#l00175">exts.h:175</a></div></div>
<div class="ttc" id="aa03257_html_a0787ffd7a666153b6a60d8eb73917037"><div class="ttname"><a href="a03257.html#a0787ffd7a666153b6a60d8eb73917037">hrgnScrlSrc</a></div><div class="ttdeci">HRGN hrgnScrlSrc</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00464">kernel/globals.c:464</a></div></div>
<div class="ttc" id="aa01881_html"><div class="ttname"><a href="a01881.html">_TL</a></div><div class="ttdef"><b>Definition:</b> <a href="a00257_source.html#l00347">usercli.h:347</a></div></div>
<div class="ttc" id="aa03257_html_a0c32ef18f0038af530970be1400ae8a1"><div class="ttname"><a href="a03257.html#a0c32ef18f0038af530970be1400ae8a1">hrgnScrl2</a></div><div class="ttdeci">HRGN hrgnScrl2</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00462">kernel/globals.c:462</a></div></div>
<div class="ttc" id="aa02581_html_a2778d611c2b27395e559c94d05732e1f"><div class="ttname"><a href="a02581.html#a2778d611c2b27395e559c94d05732e1f">tagWND::rcWindow</a></div><div class="ttdeci">RECT rcWindow</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01398">user.h:1398</a></div></div>
<div class="ttc" id="aa02581_html"><div class="ttname"><a href="a02581.html">tagWND</a></div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01388">user.h:1388</a></div></div>
<div class="ttc" id="aa02581_html_a6053af0b243b6737640988eb63081de3"><div class="ttname"><a href="a02581.html#a6053af0b243b6737640988eb63081de3">tagWND::spwndParent</a></div><div class="ttdeci">struct tagWND * spwndParent</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01392">user.h:1392</a></div></div>
<div class="ttc" id="aa03257_html_a22582da0c3535d7a4fc98d7a7b03cc18"><div class="ttname"><a href="a03257.html#a22582da0c3535d7a4fc98d7a7b03cc18">hrgnInvalid</a></div><div class="ttdeci">HRGN hrgnInvalid</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00439">kernel/globals.c:439</a></div></div>
<div class="ttc" id="aa02869_html_ade15a80896abdba1533b909440c29699"><div class="ttname"><a href="a02869.html#ade15a80896abdba1533b909440c29699">tagQ::caret</a></div><div class="ttdeci">CARET caret</div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l02182">userk.h:2182</a></div></div>
<div class="ttc" id="aa00935_html_a0cbc8750cb300c339ef3d2c0ca689f1a"><div class="ttname"><a href="a00935.html#a0cbc8750cb300c339ef3d2c0ca689f1a">EqualRect</a></div><div class="ttdeci">BOOL APIENTRY EqualRect(CONST RECT *prc1, CONST RECT *prc2)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00285">rect.c:285</a></div></div>
<div class="ttc" id="aa00836_html_a9c15f7cde7f639a841e61fa332a07992"><div class="ttname"><a href="a00836.html#a9c15f7cde7f639a841e61fa332a07992">InternalScrollDC</a></div><div class="ttdeci">int InternalScrollDC(HDC hdc, int dx, int dy, RECT *prcSrc, RECT *prcClip, HRGN hrgnInvalid, HRGN hrgnUpdate, LPRECT prcUpdate, BOOL fLogUnits)</div><div class="ttdef"><b>Definition:</b> <a href="a00836_source.html#l00067">scrollw.c:67</a></div></div>
<div class="ttc" id="aa02605_html_a5e0929a8ef013061be966961b2eddbff"><div class="ttname"><a href="a02605.html#a5e0929a8ef013061be966961b2eddbff">tagDISPLAYINFO::pDevLock</a></div><div class="ttdeci">LPVOID pDevLock</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01577">user.h:1577</a></div></div>
<div class="ttc" id="aa00860_html_a682e7a615d4877278df80629d78c3081"><div class="ttname"><a href="a00860.html#a682e7a615d4877278df80629d78c3081">SpbCheckRect</a></div><div class="ttdeci">VOID SpbCheckRect(PWND pwnd, LPRECT lprc, DWORD flags)</div><div class="ttdef"><b>Definition:</b> <a href="a00860_source.html#l01031">spb.c:1031</a></div></div>
<div class="ttc" id="aa00872_html_a6790f24888ee57e445fd3eb5b90fae39"><div class="ttname"><a href="a00872.html#a6790f24888ee57e445fd3eb5b90fae39">OffsetChildren</a></div><div class="ttdeci">VOID OffsetChildren(PWND pwnd, int dx, int dy, LPRECT prcHitTest)</div><div class="ttdef"><b>Definition:</b> <a href="a00872_source.html#l04607">swp.c:4607</a></div></div>
<div class="ttc" id="aa00896_html_af920796d5612f833ca2179b07a008e69"><div class="ttname"><a href="a00896.html#af920796d5612f833ca2179b07a008e69">xxxInternalInvalidate</a></div><div class="ttdeci">VOID xxxInternalInvalidate(PWND pwnd, HRGN hrgnUpdate, DWORD flags)</div><div class="ttdef"><b>Definition:</b> <a href="a00896_source.html#l01257">update.c:1257</a></div></div>
<div class="ttc" id="aa02653_html_a0a2f84ed7838f07779ae24c5a9086d33"><div class="ttname"><a href="a02653.html#a0a2f84ed7838f07779ae24c5a9086d33">tagCARET::y</a></div><div class="ttdeci">int y</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02244">user.h:2244</a></div></div>
<div class="ttc" id="aa02889_html_abb1184e0c5805b5ad89b79dcc2bd17c8"><div class="ttname"><a href="a02889.html#abb1184e0c5805b5ad89b79dcc2bd17c8">tagTHREADINFO::rpdesk</a></div><div class="ttdeci">PDESKTOP rpdesk</div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l02288">userk.h:2288</a></div></div>
<div class="ttc" id="aa02889_html_aea8fcdf7513cfa8972ff27524296079b"><div class="ttname"><a href="a02889.html#aea8fcdf7513cfa8972ff27524296079b">tagTHREADINFO::pq</a></div><div class="ttdeci">struct tagQ * pq</div><div class="ttdef"><b>Definition:</b> <a href="a00899_source.html#l02273">userk.h:2273</a></div></div>
<div class="ttc" id="aa00935_html_afa9133f9221aadfcbf10c70a168f3a5f"><div class="ttname"><a href="a00935.html#afa9133f9221aadfcbf10c70a168f3a5f">SubtractRect</a></div><div class="ttdeci">BOOL APIENTRY SubtractRect(LPRECT prcDst, CONST RECT *prcSrc1, CONST RECT *prcSrc2)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00316">rect.c:316</a></div></div>
<div class="ttc" id="aa00836_html_a7ecb77bf56d80ccba86e9cba46924271"><div class="ttname"><a href="a00836.html#a7ecb77bf56d80ccba86e9cba46924271">GetTrueClipRgn</a></div><div class="ttdeci">int GetTrueClipRgn(HDC hdc, HRGN hrgnClip)</div><div class="ttdef"><b>Definition:</b> <a href="a00836_source.html#l00030">scrollw.c:30</a></div></div>
<div class="ttc" id="aa00620_html_abaf8f946537e0303f6ba99f21d716670"><div class="ttname"><a href="a00620.html#abaf8f946537e0303f6ba99f21d716670">InternalShowCaret</a></div><div class="ttdeci">void InternalShowCaret()</div><div class="ttdef"><b>Definition:</b> <a href="a00620_source.html#l00294">caret.c:294</a></div></div>
<div class="ttc" id="aa02653_html_ad36501a70b25e18bcf48dd6e03392305"><div class="ttname"><a href="a02653.html#ad36501a70b25e18bcf48dd6e03392305">tagCARET::cy</a></div><div class="ttdeci">int cy</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02245">user.h:2245</a></div></div>
<div class="ttc" id="aa00899_html_a70b09c3e2b495630f4205d34be505afb"><div class="ttname"><a href="a00899.html#a70b09c3e2b495630f4205d34be505afb">CheckLock</a></div><div class="ttdeci">VOID CheckLock(PVOID pobj)</div></div>
<div class="ttc" id="aa02653_html_af905a9989361d094908ad04e08f6429d"><div class="ttname"><a href="a02653.html#af905a9989361d094908ad04e08f6429d">tagCARET::cx</a></div><div class="ttdeci">int cx</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02246">user.h:2246</a></div></div>
<div class="ttc" id="aa02609_html_a68937d60a6f49b7a8431db62b38ea721"><div class="ttname"><a href="a02609.html#a68937d60a6f49b7a8431db62b38ea721">tagDESKTOPINFO::spwnd</a></div><div class="ttdeci">struct tagWND * spwnd</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01603">user.h:1603</a></div></div>
<div class="ttc" id="aa02581_html_a6171c9000ea2060597a9bcf498ee0316"><div class="ttname"><a href="a02581.html#a6171c9000ea2060597a9bcf498ee0316">tagWND::spwndChild</a></div><div class="ttdeci">struct tagWND * spwndChild</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01393">user.h:1393</a></div></div>
<div class="ttc" id="aa00935_html_a6f9d1e9b327899127c080496900d48d9"><div class="ttname"><a href="a00935.html#a6f9d1e9b327899127c080496900d48d9">SetRectEmpty</a></div><div class="ttdeci">BOOL APIENTRY SetRectEmpty(LPRECT prc)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00414">rect.c:414</a></div></div>
<div class="ttc" id="aa00935_html_a31ccccdb469eefbb55d18b71a26af0da"><div class="ttname"><a href="a00935.html#a31ccccdb469eefbb55d18b71a26af0da">CopyRect</a></div><div class="ttdeci">BOOL APIENTRY CopyRect(LPRECT prcDst, CONST RECT *prcSrc)</div><div class="ttdef"><b>Definition:</b> <a href="a00935_source.html#l00391">rect.c:391</a></div></div>
<div class="ttc" id="aa00257_html_af4d8743272a8eb22e205078faaed38c5"><div class="ttname"><a href="a00257.html#af4d8743272a8eb22e205078faaed38c5">_GetDCEx</a></div><div class="ttdeci">HDC _GetDCEx(HWND hwnd, HRGN hrgnClip, DWORD flags)</div></div>
<div class="ttc" id="aa02653_html_a68937d60a6f49b7a8431db62b38ea721"><div class="ttname"><a href="a02653.html#a68937d60a6f49b7a8431db62b38ea721">tagCARET::spwnd</a></div><div class="ttdeci">struct tagWND * spwnd</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02239">user.h:2239</a></div></div>
<div class="ttc" id="aa03257_html_a0290a2221e753feb7b6a59fcf25f4ffb"><div class="ttname"><a href="a03257.html#a0290a2221e753feb7b6a59fcf25f4ffb">hrgnScrlDst</a></div><div class="ttdeci">HRGN hrgnScrlDst</div><div class="ttdef"><b>Definition:</b> <a href="a03257_source.html#l00465">kernel/globals.c:465</a></div></div>
<div class="ttc" id="aa02581_html_a17d59d04094aef8b577c0aa781cdf2c6"><div class="ttname"><a href="a02581.html#a17d59d04094aef8b577c0aa781cdf2c6">tagWND::rcClient</a></div><div class="ttdeci">RECT rcClient</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l01399">user.h:1399</a></div></div>
<div class="ttc" id="aa02653_html_a6150e0515f7202e2fb518f7206ed97dc"><div class="ttname"><a href="a02653.html#a6150e0515f7202e2fb518f7206ed97dc">tagCARET::x</a></div><div class="ttdeci">int x</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l02243">user.h:2243</a></div></div>
<div class="ttc" id="aa00365_html_ad3225ce06580cb58802233512f3d9c81"><div class="ttname"><a href="a00365.html#ad3225ce06580cb58802233512f3d9c81">IsVisible</a></div><div class="ttdeci">BOOL IsVisible(PWND pwnd)</div><div class="ttdef"><b>Definition:</b> <a href="a03728_source.html#l00456">rtl/winmgr.c:456</a></div></div>
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